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  1. R

    99 90hp 3cyl

    You have spent big money on parts.----Based on friends suggestions ?-----Time to invest in factory manual and do orderly trouble shooting.-----Assuming your flywheel is spinning fast enough will miss lead you !!
  2. R

    Replacing an old outboard on a 1964 MFG Niagara Custom

    A new motor would come with required electrical rigging.----Next to impossible to use 1964 ELECTRIC SHIFT wiring on anything made today !!
  3. R

    One of the plug wasn’t firing. Any damage?

    The absolute first thing to do is a compression test.-----Post your numbers.----These motors are famous ( in my area ) for broken piston rings.
  4. R

    99 90hp 3cyl

    Simple-----I did not know that you had a charged battery that was tested.------Many modern motors need to spin the flywheel at 250 RPM for the magneto to produce a spark.----You have replaced many $$$ parts and some orderly trouble shooting needs to be done on your part.
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    1976 200hp Johnson Power on 2 Cylinders

    There is no S.L.O.W. system on your motor.---There is not much that can go wrong with those fuel pumps.----Unless hoses are not routed incorrectly.----Yes you have spark on all 6 leads !-----But are they timed correctly as in are the wires FROM powerpacks going to the correct coils ?----Up to...
  6. R

    Is this repairable? Outdrive Chip

    Easy fix with some JB weld.
  7. R

    One of the plug wasn’t firing. Any damage?

    what motor
  8. R

    2002 Mercury 3.3hp Gear Shift Adjustment.

    pushes down for neutral.-----Motor does not need to run.
  9. R

    how to install 1972 25 HP Johnson Key kill switch

    It has the 2 black wires to use for a lanyard kill switch.---East to hook up.
  10. R

    99 90hp 3cyl

    Charge battery.----Have battery load tested.-----Take starter apart for inspection and ohm test on armature.
  11. R

    Force 125 1986, hole in front of lower unit weeping oil

    Most motors have these drain holes.----Makes sure that cavities do not freeze in cold climates.----And yes the oil mixed with the gasoline can leak out of them at times.----Just normal 2 stroke operation !
  12. R

    Does my engine have a problem? Or is this normal behavior?

    Nope----A 2 stroke in good condition ( 2 to 200 HP ) will idle all day long.
  13. R

    Need help 1970's Evinrude 90hp " No fire on all plugs "

    By the cowling it looks to be an 81 model.----Some will argue.-----Charge battery.----Load test battery.----Take starter apart and inspect.----Do ohm check on armature.------If ohms check good the assemble and test for spark.----No coins spent doing this investigation.
  14. R

    V4 CROSSFLOW HELP,REBUILD.

    The ----" brass plug " ----Is an expensive check valve.----It is press fit in place.-----Depending on how many hours on the pistons it is not a good idea to put new rings on older factory pistons.---Simple as that !
  15. R

    Keel roller not centering

    When loading I put rear roller so it is submerged.-----That centers the boat every time.-----Then if effort on crank handle increases I back the trailer in more as needed.
  16. R

    how to install 1972 25 HP Johnson Key kill switch

    Find the 2 small black wires that go under the flywheel.----They are usually connected to a stop switch.----The circuit is CLOSED to stop the motor.-----
  17. R

    1969 Johnson 40HP Wiring Rebuild

    Wiring diagram is found at -----mastertechmarine------Or google outboard wiring diagrams.
  18. R

    Service Manual

    That year was when OMC was in " turmoil mode ".-----May not have printed a service manual.,----Use the nearest equivalent.----Not a lot of changes from year to year in that era.
  19. R

    V4 CROSSFLOW HELP,REBUILD.

    ???----Leave that hole alone !!----It was put there by the factory.------Look the block over carefully to see what the purpose is for this hole.----Work carefully on your rebuilding.-----Assumptions / mistakes can be costly.-----And I do not like that black sealer used on the crankcase half...
  20. R

    60's OMC small hub large hub props

    All use the same prop.-----Small hub for large boats.------Prop spins very fast so 10" is a big change.
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